The lack of a Wacom style digitiser seems to be it's biggest critique (aside from price). The point about their being only 1 USB port is a good one, I wonder if

The lack of a Wacom style digitiser seems to be it's biggest critique (aside from price). The point about their being only 1 USB port is a good one, I wonder if it's possible to charge the device while using the port if you have a USB hub...seems unlikely.